[level 2] 기능개발 - 42586

문제 링크

프로그래머스

class Solution {

    public int[] solution(int[] progresses, int[] speeds) {
       ArrayList<Integer> answer = new ArrayList<>();
       int[] finishTime = new int[progresses.length];

       for (int i = 0; i < progresses.length; i++) {
          finishTime[i] = (int) Math.ceil((100D - progresses[i]) / speeds[i]);
       }

       for (int i = 0; i < progresses.length; i++) {
          int count = 1;
          int finish = finishTime[i];

          for (int j = i + 1; j < progresses.length; j++) {
             if (finishTime[j] <= finish) {
                count++;
                i++;
                continue;
             }
             break;
          }
          answer.add(count);
       }

       return answer.stream().mapToInt(Integer::intValue).toArray();
    }
}